The effective electroweak mixing angle sin θeff with two-loop fermionic contributions
نویسنده
چکیده
We present the results from a calculation of the full electroweak two-loop fermionic contributions to the effective leptonic mixing angle of the Z boson, sin θeff , in the Standard Model. On-shell renormalization and analytic calculations are performed for the three-point vertex functions at zero external momenta, whereas irreducible three-point integrals for non-vanishing external momenta are evaluated semi-analytically applying two different methods. Comparisons with a previous calculation show complete agreement.
منابع مشابه
Higgs-mass dependence of the effective electroweak mixing angle sin θeff at the two-loop level
The result for the Higgs-dependent electroweak two-loop bosonic contributions to the effective leptonic mixing angle of the Z-boson in the Standard Model is presented. Together with the previously calculated fermionic contributions it yields the complete dependence of sin θeff on the Higgs-boson mass MH . Compared to the fermionic contributions, the bosonic contributions are found to be smaller...
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